Beer, Chilli and Mustard Sauce

This sauce is an elegant dance of physics and chemistry: emulsion. Beer (water-based) and butter (fat-based) inherently don't like each other. Natural substances in mustard and slow addition of cold butter help create a stable, creamy sauce without cream or flour. The hoppy bitterness of the beer counterpoints the honey's sweetness beautifully.
🕒 Prep Time 5 mins
🍳 Cook Time 10 mins
Total Time 15 mins
🍽️ Servings 4 servings
🔥 Calories 85 kcal
🌍 Cuisine International, Pub Food

Ingredients

Equipment Needed

  • Small saucepan with handle
  • Whisk (essential)

Allergen Information

⚠️ Mustard
⚠️ Milk
⚠️ Cereals containing gluten

Instructions

1

Put the beer, garlic, honey, and chilli in the saucepan. Bring to a boil and cook until reduced by half (reduction).

Tip: This concentrates flavours and evaporates the alcohol.
2

Reduce flame to minimum. Whisk in the mustard.

Tip: Mustard dislikes high heat; it can lose potency and turn bitter.
3

Remove from heat. Now the trick: whilst stirring constantly, add the COLD butter one cube at a time.

Tip: This is called 'mounting with butter' (monter au beurre). Cold butter melts slowly, having time to form an emulsion with the liquid, making the sauce glossy and thick.

Recipe FAQ

The butter separated (sauce split).
The base was too hot, or you added butter too fast. A tablespoon of ice-cold water and wild whisking sometimes saves it.
It remained too thin.
You didn't reduce the beer enough at the start. Thicken further, or use a tiny bit of cornflour.

Ingredients

  • 3 tbsp Dijon mustard
  • 100 ml light beer (Lager or Pilsner)
  • 1 tbsp honey
  • 0.5 tsp chilli powder (or Cayenne)
  • 1 clove crushed garlic
  • 20 g cold butter (diced)
  • 1 pinch salt